Diggers were small burrowing creatures enslaved by the Savage Locust for use as explosive projectiles that are fired from the Digger Launcher. When fired, they burrow under the ground behind cover, then pop up and explode in the air, killing the enemies in that cover. They can burrow through dirt, rock and wood.

When fired into a target, the digger will latch on to the target and chew into its chest before exploding inside the victim.